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Expired Canadian patentCanada

Homologous recombination in mismatch repair inactivated eukaryotic cells

CA 2263958 C · Owner: De Wind, Niels · Inventors: Te Riele, Henricus Petrus Joseph; De Wind, Niels; Dekker-Vlaar, Helena Maria Johanna

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Abstract From the Canadian patent

The present invention relates to a method for modifying the genome of eukaryotic cells by homologous recombination using DNA sequences which substantially differ from the target locus with respect to the nucleotide sequence (0.1 to 30 % divergence) in the region where recombination takes place. Homologous recombination between diverged sequences is achieved by genetic or transitory inactivation of the cell's mismatch repair system.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed July 26, 1995 and granted June 19, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2017.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 26, 1995
GrantedJune 19, 2012
Term endedJuly 26, 2015
Patent numberCA 2263958 C
Classification (IPC)C12N15/90 +1 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedJuly 26, 1995Patent grantedJune 19, 2012Term endedJuly 26, 2015

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.